High-heat-insulation nano ceramic powder, and preparation method and application thereof

A technology of nano-ceramic powder and ceramic powder, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of easy deterioration, low cost investment, failure of semiconductor nano-oxides, etc.

Inactive Publication Date: 2017-09-29
NALINV NANOTECHNOLOGY (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, nano-ceramic heat-insulating powders are mainly focused on semiconductor nano-oxides, such as indium tin oxide, tin antimony oxide, aluminum zinc oxide, gallium aluminum oxide, aluminum cadmium oxide, tin cadmium oxide, etc., but these semiconductor oxides It is often not stable in the air, especially when the temperature is higher than 100 ° C, it is easy to cause the failure of these semiconductor nano-oxides; at the same time, these semiconductor oxides do not have strong weather resistance, especially when integrated into organic matter It is easy to deteriorate under the radiation of strong ultraviolet light, so the preparation of nano-ceramic powder with high stability and high heat insulation has become a hot spot and difficulty of high heat insulation powder.
[0004] Nitride, especially titanium nitride, is a very promising semiconductor nano-powder for the preparation of high heat insulation, which has excellent blocking efficiency for the near-infrared band of 760-1500 nanometers, and currently there are few low-cost Most of the methods for large-scale preparation of titanium nitride nanopowders are still in the stage of experimental research and development or high investment, and there is no method for large-scale preparation of titanium nitride nanoceramic powders with low cost input.

Method used

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  • High-heat-insulation nano ceramic powder, and preparation method and application thereof
  • High-heat-insulation nano ceramic powder, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 10 kg of tetraethyl titanate, 20 kg of methanol, and 20 kg of ethylenediamine, stir until a clear and transparent solution is obtained, and obtain a solid substance by distillation under reduced pressure. The liquid obtained by distillation can be recycled.

[0030] Put the obtained solid precursor into an annealing furnace, pass high-purity argon as a protective atmosphere, slowly increase the temperature at a rate of 2-4°C per minute, keep it at 800°C for 120 minutes, and then cool it. Black nano titanium nitride powder can be obtained.

[0031] The black nano titanium nitride was characterized by X-ray diffractometer and transmission electron microscope.

[0032] figure 1 The crystal structure map of titanium nitride nanopowder, figure 2 Transmittance spectra of titanium nitride nanoparticle.

Embodiment 2

[0034] Weigh 10 kg tetraethyl titanate, 20 kg ethanol, and 20 kg propylenediamine, stir until a clear and transparent solution is obtained, and obtain a solid substance by vacuum distillation. The liquid obtained by distillation can be recycled.

[0035] Put the obtained solid precursor into an annealing furnace, pass high-purity argon as a protective atmosphere, slowly increase the temperature at a rate of 2-4°C per minute, keep it at 800°C for 120 minutes, and then cool it. Black nano titanium nitride powder can be obtained.

[0036] The black nano titanium nitride was characterized by X-ray diffractometer and transmission electron microscope.

[0037] Obtained XRD and TEM figures are similar to Example 1.

Embodiment 3

[0039] Weigh 10 kg tetrabutyl titanate, 20 kg isopropanol, and 20 kg diethanolamine, stir until a clear and transparent solution is obtained, and obtain a solid substance by vacuum distillation. The liquid obtained by distillation can be recycled.

[0040] Put the obtained solid precursor into an annealing furnace, pass high-purity argon as a protective atmosphere, slowly increase the temperature at a rate of 2-4°C per minute, keep it at about 900°C for 120 minutes, and then cool it. Black nano titanium nitride powder can be obtained.

[0041] The black nano titanium nitride was characterized by X-ray diffractometer and transmission electron microscope.

[0042] Obtained XRD and TEM figures are similar to Example 1.

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Abstract

The invention discloses a preparation method and application of high-heat-insulation nano ceramic powder. The nano powder is titanium nitride nano powder, and the infrared rejection of the nano powder is higher than 90%. The preparation method of the nano powder comprises the following steps: dissolving a titanium-source-containing compound into a volatile solvent; mixing the solution with a nitrogen-source-containing compound; and finally, performing high-heat treatment on the mixed precursor in an inert atmosphere to obtain the titanium nitride nano powder. The titanium nitride nano powder has excellent stability and infrared rejection property under ultraviolet irradiation, and can be used for preparing energy-saving paints, energy-saving films, plastic improvers and the like. Furthermore, the preparation method is simple, has the advantages of low cost and short period, and can easily implement large-scale production.

Description

technical field [0001] The invention relates to a preparation method and application of a high heat-insulating nano-ceramic powder, belonging to the technical field of functional materials. Background technique [0002] The research on environmentally friendly thermal insulation film is a hot research in the field of optimizing my country's building energy conservation. It has attracted a large number of research institutes and high-tech companies in the scientific and industrial circles. The preparation of high thermal insulation powder has always been the key Key points and difficulties in the field. [0003] At present, nano-ceramic heat-insulating powders are mainly focused on semiconductor nano-oxides, such as indium tin oxide, tin antimony oxide, aluminum zinc oxide, gallium aluminum oxide, aluminum cadmium oxide, tin cadmium oxide, etc., but these semiconductor oxides It is often not stable in the air, especially when the temperature is higher than 100 ° C, it is easy...

Claims

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Application Information

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IPC IPC(8): C01B21/076C04B35/58
CPCC01B21/076C01P2002/72C01P2004/04C04B35/58014
Inventor 周振平叶航肖琳
Owner NALINV NANOTECHNOLOGY (SHANGHAI) CO LTD
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